I have a sample here, but I cannot seem to upload it to the forum.
It is a zip with a size of 1,3 MB ... and I get an error from the forum 'Sorry, that file is too big (maximum size is 4096kb)'.
switch between the tabs in the tab-container, smooooooth
collapse the panel
switch between the tab... wtf ... you can still click on the tabs if you hit some invisible narrow horizontal line in the upper half of it, the rest is just not reacting to your cursor, firefox's inspector makes me think the textboxes in the panel are somehow invisible but still 'layered' above the tabs